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How to get 2560x1440@50Hz / CVT-Reduced Blank to work on HDMI-output?

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Andreas Balg's picture
Starter
Andreas Balg

Apr 21, 2016 - 01:32pm

  • Im trying to setup a 27" screen on Fedora 23 (intel driver installer 1.4.0 Q4 2015) attached to an HDMI (ultrabook ASUS UX31A). I know it needs "reduced blank" and a timing of max 50Hz  in order to work on with the max Bandwith on HDMI (at least that way it works on Windows using the same setup and "CustomResolution.exe")

     

    1st guess)

      "cvt -r 2560 1440 50"
    >> ERROR: Multiple of 60Hz refresh rate required for reduced blanking.

     

    2nd guess)

    
    
    

    Also The same seems to be true for "gtf"

      "gtf 2560 1440 50"
    # 2560x1440 @ 50.00 Hz (GTF) hsync: 74.10 kHz; pclk: 256.09 MHz
    Modeline "2560x1440_50.00"  256.09  2560 2728 3008 3456  1440 1441 1444 1482  -HSync +Vsync

    >>>> Does not work either

     

    3rd guess)

    A Modeline that I've found on the internet :

     

    xrandr --newmode "2560x1440_50.00_rb" 200.25 2560 2608 2640 2720 1440 1443 1448 1474 +HSync -Vsync
    xrandr --addmode HDMI1 "2560x1440_50.00_rb"
    xrandr --output HDMI1 --mode "2560x1440_50.00_rb"

    >>>> Does not work either => Results in:

    Apr 23 15:30:39 schleppi-ultra.balg.lan /usr/libexec/gdm-x-session[2986]: (II) intel(0): resizing framebuffer to 5504x1440
    Apr 23 15:30:39 schleppi-ultra.balg.lan /usr/libexec/gdm-x-session[2986]: (II) intel(0): switch to mode 2560x1440@49.9 on HDMI1 using pipe 0, position (0, 0), rotation normal, reflection n
    Apr 23 15:30:51 schleppi-ultra.balg.lan /usr/libexec/gdm-x-session[2986]: (II) intel(0): resizing framebuffer to 5504x1180
    Apr 23 15:30:51 schleppi-ultra.balg.lan /usr/libexec/gdm-x-session[2986]: (II) intel(0): switch to mode 2048x1152@60.0 on HDMI1 using pipe 0, position (0, 0), rotation normal, reflection n
    Apr 23 15:30:51 schleppi-ultra.balg.lan kernel: [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe B
    Apr 23 15:30:52 schleppi-ultra.balg.lan kernel: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
    

     

    Last try)

    Read the modeline from "PowerStrip" from a running windows that actually runs the wanted resolution:

     

    xrandr --newmode "2560x1440" 200.002 2560 2608 2640 2720 1440 1443 1448 1474 -hsync -vsync
    

    But this only switches to a black screen and causes the "pipe_off wait timed out" message in dmesg below...

     

     

    I've found the following two graphics related problems in the logs (dmesg) which might help as well:

    [    2.625304] ------------[ cut here ]------------
    [    2.625335] WARNING: CPU: 0 PID: 6 at drivers/gpu/drm/drm_irq.c:1326 drm_wait_one_vblank+0x1b5/0x1c0 [drm]()
    [    2.625335] vblank wait timed out on crtc 0
    [    2.625362] Modules linked in: i915 rtsx_usb_sdmmc mmc_core rtsx_usb hid_logitech_hidpp i2c_algo_bit drm_kms_helper drm serio_raw video fjes hid_logitech_dj
    [    2.625368] CPU: 0 PID: 6 Comm: kworker/u8:0 Tainted: G     U          4.4.7-300.fc23.x86_64 #1
    [    2.625370] Hardware name: ASUSTeK COMPUTER INC. UX31A/UX31A, BIOS UX31A.219 06/14/2013
    [    2.625380] Workqueue: events_unbound async_run_entry_fn
    [    2.625385]  0000000000000286 00000000d003577f ffff88011a03f818 ffffffff813b5f8e
    [    2.625389]  ffff88011a03f860 ffffffffa007e772 ffff88011a03f850 ffffffff810a4122
    [    2.625392]  ffff88003e677000 0000000000000000 0000000000000000 0000000000000006
    [    2.625394] Call Trace:
    [    2.625405]  [<ffffffff813b5f8e>] dump_stack+0x63/0x85
    [    2.625413]  [<ffffffff810a4122>] warn_slowpath_common+0x82/0xc0
    [    2.625418]  [<ffffffff810a41bc>] warn_slowpath_fmt+0x5c/0x80
    [    2.625426]  [<ffffffff810e6023>] ? finish_wait+0x53/0x70
    [    2.625450]  [<ffffffffa0052c15>] drm_wait_one_vblank+0x1b5/0x1c0 [drm]
    [    2.625456]  [<ffffffff810e62e0>] ? wake_atomic_t_function+0x70/0x70
    [    2.625552]  [<ffffffffa01736d5>] intel_atomic_commit+0x475/0x1420 [i915]
    [    2.625588]  [<ffffffffa006b1be>] ? drm_atomic_check_only+0x18e/0x590 [drm]
    [    2.625618]  [<ffffffffa006b5f7>] drm_atomic_commit+0x37/0x60 [drm]
    [    2.625634]  [<ffffffffa00c409f>] restore_fbdev_mode+0x22f/0x260 [drm_kms_helper]
    [    2.625649]  [<ffffffffa00c6273>] drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper]
    [    2.625660]  [<ffffffffa00c62ed>] drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
    [    2.625744]  [<ffffffffa018a3ba>] intel_fbdev_set_par+0x1a/0x60 [i915]
    [    2.625750]  [<ffffffff81428050>] fbcon_init+0x570/0x5f0
    [    2.625755]  [<ffffffff814a9aea>] visual_init+0xca/0x130
    [    2.625759]  [<ffffffff814ab981>] do_bind_con_driver+0x1c1/0x3a0
    [    2.625764]  [<ffffffff814abe99>] do_take_over_console+0x149/0x1a0
    [    2.625769]  [<ffffffff81423eb7>] do_fbcon_takeover+0x57/0xb0
    [    2.625773]  [<ffffffff81428ac8>] fbcon_event_notify+0x658/0x750
    [    2.625778]  [<ffffffff810c355a>] notifier_call_chain+0x4a/0x70
    [    2.625783]  [<ffffffff810c3897>] __blocking_notifier_call_chain+0x47/0x60
    [    2.625787]  [<ffffffff810c38c6>] blocking_notifier_call_chain+0x16/0x20
    [    2.625792]  [<ffffffff8142e71b>] fb_notifier_call_chain+0x1b/0x20
    [    2.625798]  [<ffffffff81430a3f>] register_framebuffer+0x20f/0x350
    [    2.625812]  [<ffffffffa00c659a>] drm_fb_helper_initial_config+0x28a/0x410 [drm_kms_helper]
    [    2.625889]  [<ffffffffa018aebb>] intel_fbdev_initial_config+0x1b/0x20 [i915]
    [    2.625894]  [<ffffffff810c4fca>] async_run_entry_fn+0x4a/0x140
    [    2.625900]  [<ffffffff810bc5c6>] process_one_work+0x156/0x430
    [    2.625904]  [<ffffffff810bc8ee>] worker_thread+0x4e/0x450
    [    2.625909]  [<ffffffff810bc8a0>] ? process_one_work+0x430/0x430
    [    2.625912]  [<ffffffff810c2678>] kthread+0xd8/0xf0
    [    2.625916]  [<ffffffff810c25a0>] ? kthread_worker_fn+0x160/0x160
    [    2.625921]  [<ffffffff817a144f>] ret_from_fork+0x3f/0x70
    [    2.625925]  [<ffffffff810c25a0>] ? kthread_worker_fn+0x160/0x160
    [    2.625928] ---[ end trace cec8cc6321f01362 ]---
    

     

    2) And this one as well:

     

    [   13.375747] ------------[ cut here ]------------
    [   13.375827] WARNING: CPU: 3 PID: 1894 at drivers/gpu/drm/i915/intel_display.c:1144 intel_disable_pipe+0x2b6/0x2c0 [i915]()
    [   13.375831] pipe_off wait timed out
    [   13.375834] Modules linked in: cmac fuse xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack tun bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables evdi(OE) uhid bnep rtsx_usb_ms memstick arc4 intel_rapl iosf_mbi x86_pkg_temp_thermal coretemp kvm_intel btusb iTCO_wdt asus_nb_wmi kvm iTCO_vendor_support asus_wmi sparse_keymap btrtl btbcm btintel bluetooth uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core irqbypass v4l2_common crct10dif_pclmul iwlmvm crc32_pclmul vfat fat snd_hda_codec_hdmi videodev mac80211 crc32c_intel snd_hda_codec_realtek snd_hda_codec_generic media snd_hda_intel iwlwifi snd_hda_codec cfg80211 snd_hda_core snd_hwdep snd_seq joydev snd_seq_device
    [   13.375920]  snd_pcm i2c_i801 lpc_ich rfkill wmi int3403_thermal acpi_als mei_me kfifo_buf industrialio snd_timer int3402_thermal mei int3400_thermal int340x_thermal_zone acpi_thermal_rel snd tpm_tis shpchp soundcore tpm nfsd binfmt_misc nfs_acl lockd auth_rpcgss grace sunrpc i915 rtsx_usb_sdmmc mmc_core rtsx_usb hid_logitech_hidpp i2c_algo_bit drm_kms_helper drm serio_raw video fjes hid_logitech_dj
    [   13.375971] CPU: 3 PID: 1894 Comm: gnome-shell Tainted: G     U  W  OE   4.4.7-300.fc23.x86_64 #1
    [   13.375975] Hardware name: ASUSTeK COMPUTER INC. UX31A/UX31A, BIOS UX31A.219 06/14/2013
    [   13.375979]  0000000000200286 00000000827c27d7 ffff880115447a78 ffffffff813b5f8e
    [   13.375985]  ffff880115447ac0 ffffffffa01d6de8 ffff880115447ab0 ffffffff810a4122
    [   13.375991]  ffff88003d940000 0000000000070008 00000000fffb9ff6 0000000000070008
    [   13.375996] Call Trace:
    [   13.376011]  [<ffffffff813b5f8e>] dump_stack+0x63/0x85
    [   13.376021]  [<ffffffff810a4122>] warn_slowpath_common+0x82/0xc0
    [   13.376027]  [<ffffffff810a41bc>] warn_slowpath_fmt+0x5c/0x80
    [   13.376086]  [<ffffffffa016a446>] intel_disable_pipe+0x2b6/0x2c0 [i915]
    [   13.376137]  [<ffffffffa016a7fc>] ironlake_crtc_disable+0x8c/0x7c0 [i915]
    [   13.376182]  [<ffffffffa0166adc>] ? intel_crtc_disable_planes+0xdc/0xf0 [i915]
    [   13.376231]  [<ffffffffa0173387>] intel_atomic_commit+0x127/0x1420 [i915]
    [   13.376283]  [<ffffffffa006b1be>] ? drm_atomic_check_only+0x18e/0x590 [drm]
    [   13.376320]  [<ffffffffa006acbd>] ? drm_atomic_set_mode_prop_for_crtc+0x2d/0x110 [drm]
    [   13.376350]  [<ffffffffa006b5f7>] drm_atomic_commit+0x37/0x60 [drm]
    [   13.376373]  [<ffffffffa00c34c6>] drm_atomic_helper_set_config+0x76/0xb0 [drm_kms_helper]
    [   13.376405]  [<ffffffffa005ab62>] drm_mode_set_config_internal+0x62/0x100 [drm]
    [   13.376434]  [<ffffffffa005eee2>] drm_mode_setcrtc+0x3d2/0x4f0 [drm]
    [   13.376457]  [<ffffffffa0050602>] drm_ioctl+0x152/0x540 [drm]
    [   13.376485]  [<ffffffffa005eb10>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
    [   13.376494]  [<ffffffff813407fc>] ? selinux_file_ioctl+0x10c/0x1c0
    [   13.376503]  [<ffffffff81241428>] do_vfs_ioctl+0x298/0x480
    [   13.376510]  [<ffffffff8122ff5e>] ? ____fput+0xe/0x10
    [   13.376518]  [<ffffffff813380b3>] ? security_file_ioctl+0x43/0x60
    [   13.376524]  [<ffffffff81241689>] SyS_ioctl+0x79/0x90
    [   13.376533]  [<ffffffff817a10ee>] entry_SYSCALL_64_fastpath+0x12/0x71
    [   13.376592] ---[ end trace cec8cc6321f01363 ]---
    

    I've tried using Wayland and Classic X as well ...

     

     

    Any hints on how to get this thing up and running with this stuff - attached Display is a  DELL U2715H ?? -

    Any more helpful information needed ?

     

    lspci -kvnn

    00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
        Subsystem: ASUSTeK Computer Inc. Zenbook Prime UX31A [1043:1517]
        Flags: bus master, fast devsel, latency 0, IRQ 28
        Memory at f7800000 (64-bit, non-prefetchable) [size=4M]
        Memory at e0000000 (64-bit, prefetchable) [size=256M]
        I/O ports at f000 [size=64]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
        Capabilities: [d0] Power Management version 2
        Capabilities: [a4] PCI Advanced Features
        Kernel driver in use: i915
        Kernel modules: i915

     

    modinfo i915
    filename:       /lib/modules/4.4.7-300.fc23.x86_64/kernel/drivers/gpu/drm/i915/i915.ko.xz
    license:        GPL and additional rights
    description:    Intel Graphics
    author:         Intel Corporation
    author:         Tungsten Graphics, Inc.
    firmware:       i915/bxt_dmc_ver1.bin
    firmware:       i915/skl_dmc_ver1.bin
    firmware:       i915/skl_guc_ver4.bin
    
    
    
    
    Apr 21, 2016 - 01:32pm
  • Hi - that's a lot of detail, good digging! This is, I'm afraid, only a support forum for the 01.org installer - however there is a mailing list for all levels of technical support and discussion: https://lists.freedesktop.org/mailman/listinfo/intel-gfx - we're trying to steer the more advanced questions there (and you'll have a bigger audience and a more knowledgeable pool of potential help there too).

    Apr 26, 2016 - 09:20am
  •  

    uups - nevermind - I didn't notice this project here is the installer only  - and thanks for the direction to the list anyway...

    Let's see whether they can help ;-)

     

    Cheers

     

    Apr 26, 2016 - 10:01am
  • Hi - that's a lot of detail, good digging! This is, I'm afraid, only a support forum for the 01.org installer - however there is a mailing list for all levels of technical support and discussion: https://lists.freedesktop.org/mailman/listinfo/intel-gfx - we're trying to steer the more advanced questions there (and you'll have a bigger audience and a more knowledgeable pool of potential help there too).

    Apr 26, 2016 - 09:21am